Oil-burner.



PATENTED SEPT. 19, 195.

H. B. STILZ.

OIL BURNER..

APPLICATION FILED H1B. 2a. 1995.

lnvenor ANDREW, n emma au, Puoromrnosmlmgna Mmmm, u. c.

l WTnesz-Se UNITED sTATEs PATENT OFFIOE.

OIL-BURNER.

Specicatonof Letters Patent.

Patented Sept. 19, 1905.

Application iled February 28, 1905. Serial No. 247,648.

To ct/Z whom t may concern;

Be it known that I, HARRY B. STILz, a citizen ofthe UnitedStates,residing at 1015 East Columbia street, Seattle,in the county of King andState of Washington, have invented a new and useful Oil-Burner, of whichthe following is a specification.

My invention relates to improvements in oil-burners in which the oil isreduced to an atomized state on issuingA from a nozzle preparatory toits combustion in a supply of fresh air from an outside source; and theobjects of my improvement are, rst, to supply a burner which willcompletely burn an oil consisting of a mixture having various densitiesand boiling points, such as crude petroleum, without the use of anexternal atomizing agent, such as compressed air or steam; second, toprovide a means for boiling off the more volatile constituents of theoil and separating the vapors generatedpthese vapors to be used in.atomizing the oil remaining when the two are brought together in asuitable nozzle; third, to furnish a means of generating the vapor at arate automatically kept equal to the rate at which such vapor is used inthe nozzle; `fourth, to regulate the pressure within the system, andhence the intensity of the iiame from the nozzle, by means of areliefvalve in the oil-supply pipe between the pump and the vaporizer. Iattain these objects by thesystem illustrated in the accompanyingdrawings, in which- Figure l is a plan view, and Fig. 2 is an elevation.

The oil is pumped from the supply-tank T into the vaporizer H by meansof the pump I?, operated mechanically from an external source. Theburner E supplies heat to the vaporizer, so that when the oil circulatesthrough the coils c from the bottom and into the top of the cylinder Othe more volatile constituents are vaporized by the heat from saidburner. The vapors collecting in the top ofthe cylinder O force thesurface of the oil therein to a lower level, the surplus oil escaping tothe pressure-reservoir R until a determined pressure is produced by theair compressed above the oil in said reservoir, when the reliefvalve Vwill open, and the surplus oil escapes into the su pply-tank T. Vhen thecylinderO becomes full of vapor, no oil can enter the coil c and no morevapor is produced. As the vapor is carried off from the top of thecylinder O for use the reduced pressure thereby will permit the oil toenter at bottom, and on passing through the coil a part of same will bevaporized as before. The vapor thus separated is entered into the nozzleN through the pipe f, being superheated in its passage down through thevaporizer H. The oil, deprived of its more volatile parts, 'enters thenozzle through the pipe g, and on passing through the small opening atthe center of the nozzle is met by the rapidly-moving vapors. Themixture on escaping from the nozzle enters the furnace in athoroughly-atomized l:["rom nozzle.

The burner e' derives its supply of combustible from the vapor-pipe f,and an auxiliary means will be provided for heating the vaporizer atstart.

The vaporizer is inclosed in an insulatingcasing I, provided with anopening at the bottom for the entrance of the vaporizing-flame and withan opening at the top for the escape of the products of combustion fromsaid iiame. The cylinder O is located near the coil inside the casing;but the pressure-reservoir Ris located on the outside, where it will notbe affected b v the heat.

"I prefer to show the system described as being a general case. `For aburner used under a boiler the vaporizer would consist of coils c andcylinder O, placed inside the furnace at a location giving the propertemperature to generate the desired amount of vapor, an auxiliary heaterbeing provided for the vaporizer to start the process.

The mechanically-operated pump could b omitted by placing the supplytank T at a height above vaporizer suiicient to produce the desiredpressure by the head of oil. With the supply-tank so located thepressure-reservoir R and the relief-valve V would also be omitted asbeing unnecessary.

When the oil is to be atomized in a space under a high pressure, asinside the cylinder of an internal-combustion engine, themechanically-operated pump and the system substantially as describedwill be required. The vaporizing in this case, however, can be effectedby the heat from the exhaust-gases from the engine being made to passthrough the vaporizing-chamber.

IOO

IIO

I am aware that prior to my invention oilburners have been made in whichthe oillis atomized for combustion. Itherefore do not claim such aburner broadly; but

What I do claim as my invention, and desire to secure by Letters Patent,is-

1. In an oil-burner the combination of an atomiZing-nozzle, a Vaporizerprovided with a chamber for containing oil and the .vapor generatedtherefrom` a means of sup plying` oil to said chamber, ameans ofsupplying heat to the vaporizer, a conduit for conveying oil from thebottom of said chamber to the atomizingnozzle and a conduit forconveying vapor from the top of said chamber to the atomizingnozzle.

Q. In an oil-burner the combinationwith an atomizing-nozzle,-a vaporizerprovided with a chamber for containing1 oil and the vapor generatedtherefrom, a means oi' supplying heat to the Vaporizer and conduits fromthe top and bottom of said chamber to the atomizing-nozzle, of a pumpfor supplying oil to the vapori'zer under pressure, an auxiliaryreservoir in the form of an air-chamber communicatively connected at itsbottom with the oil-supply pipe to vaporizer and a'relief-valveinisaid-oil-supply pipe.

3. In an oil-burner the Combination with an atomiZing-nozzle, of acylinder with coils of.

scribing Witnesses.

HARRY B. STILZ. Witnesses:

THEO GOMMENTZ, B; R. Woon.

